Peter,
If you want to lobby for support of the visitor pattern in the DOM, you
should post a message to [EMAIL PROTECTED] This is where DOM design
questions are discussed. To tell you the truth it won't be the first
request for it and I don't know if it will make any difference. But you
never know, the more the Working Group receives the more it is likely to
oblige.
You can also check on the archive of this mailing list for more info on
this subject:
http://lists.w3.org/Archives/Public/www-dom
--
Arnaud Le Hors - IBM Cupertino, XML Strategy Group